Schubert, Nice headphones - I have a pair and use them often with my Marantz CDP which has a built in headphone outlet. I can see why you like them. I found they had a warmer mid range than my Senn's and were very easy to listen to and much more comfortable.
But for my lazy bones I have set up a separate dedicated headphone system next to my listening chair, consisting of a MrSpeakers Mad Dogs headphones, a Woo3 tube amp, a Loki tone control, and a cheapo TEAC CDP. My hearing has probably gone to hell, but FWIW, I almost prefer this to my regular system. Sum of the parts and all that...but that is what it is and surprised the hell out of me. Pure chance.
But for my lazy bones I have set up a separate dedicated headphone system next to my listening chair, consisting of a MrSpeakers Mad Dogs headphones, a Woo3 tube amp, a Loki tone control, and a cheapo TEAC CDP. My hearing has probably gone to hell, but FWIW, I almost prefer this to my regular system. Sum of the parts and all that...but that is what it is and surprised the hell out of me. Pure chance.